Novel effect of spin dynamics with suppression of charge and orbital ordering in Nd0.5Ca0.5MnO3 under the influence of ac electric field

- Electronic & magnetic behavior of Nd0.5Ca0.5MnO3 is explored using impedance spectroscopy.
- Under ac field, possible signature of suppression of robust CO/OO antiferromagnetism is studied.
- We propose the existence of spin glass state at low temperature.
- A novel tactic is used to estimate the existence of weak ferromagnetism at high temperature.

Dynamics of spin ordering in the manganite Nd0.5Ca0.5MnO3 have been investigated in this paper. It was observed that the complex mixed magnetic ordering in pellets is comprised of antiferromagnetic ordering at 160 K (TN) and complete charge ordering at 250 K (TCO). Under ac field, appearance of unstable ferromagnetic correlations is observed above TCO, which is badly frustrated due to strong spin disorder induced by Jahn Teller distortions. Impedance measurements reveal the spin glass like scenario, suppressing the strong antiferromagnetic and charge ordering states below TN.